| Name | Description | Type | Package | Framework |
| Layout | Helper class for laying out a container element and its children. | Class | com.google.gwt.layout.client | Google WebToolkit (GWT) |
| Layout .Alignment | Used to specify the alignment of child elements within a layer. | Class | com.google.gwt.layout.client.Layout | Google WebToolkit (GWT) |
| Layout .AnimationCallback | Callback interface used by Layout. | Interface | com.google.gwt.layout.client.Layout | Google WebToolkit (GWT) |
| LayoutImpl | Class | com.google.gwt.layout.client | Google WebToolkit (GWT) | |
| LayoutImplIE8 | This implementation is used on IE8. | Class | com.google.gwt.layout.client | Google WebToolkit (GWT) |